import java.util.Scanner;
public class four {
    public static void main(String[] args) {
        Scanner input=new Scanner(System.in);
        System.out.print("请输入月份");
        int num =input.nextInt();
        if (num==3 || num==4 || num==5){
            System.out.println("春天");
        }else if (num==6||num==7||num==8){
            System.out.println("夏天 ");
        }
        else if (num==9||num==10||num==11){
            System.out.println("秋天");
        }
        else if (num==12 ||num==1||num==2){
            System.out.println("冬天");
        }
        else {
            System.out.println("输入错误");
        }
    }}
